They choose to visit one person once per game. If that person dies by the vigi, mafia or lynch (but i'm not sure about the lynch) their alignment and role won't be revealed and only the Janitor will know who they are. So i think the Janitor didn't visit anyone yet, i think mafia would try to guess who is who and then they decide who would have the most powerful role before to randomly visit a player in my opinion. Or they could always cover one town role so they can roleclaim it or they could do other things with it.
Yeah it's sad that we lost Nick and the jailer, damn.
Anyway just to confirm Fali, Nicki told you you were jailed and attacked, right?
Also i don't know who to vote for now, i was suspecting Fali and a bit Drago yesterday but i guess i will give them a second chance.